<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <h2>{{isShow?'Hello,Word':'dorW,olleH'}}</h2>
        <button @click="toggle">将大局逆转吧</button>
    </div>
    <script src="./vue.js"></script>
    <script>
       const app = new Vue({
      el: '#app',
      data: {
        isShow: true
      },
      methods: {
        toggle(){
          this.isShow = !this.isShow
        }
      }
    })
    </script>
</body>
</html>